"Sat, 14 Jun 2025 19:05:49"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250614
Only TIME
19:05:49
General datetime
2025-06-14 19:05:49Z
For Database
2025-06-14 19:05:49
For HTTP1.1
Sat, 14 Jun 2025 19:05:49 GMT